Miscibility and morphology in crystalline/amorphous blends of poly(caprolactone)/poly(4-vinylphenol) as studied by DSC, FTIR, and 13 C solid state NMR

Wang, Jian; Cheung, Man Ken; Mi, Yongli

doi:10.1016/s0032-3861(01)00673-5

Cited by 139 publications

(117 citation statements)

References 26 publications

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“…The PCL spectrum [ Fig. 2(A)] shows only the -CAO stretching vibration, a strong broad band at 1725-1736 cm Ϫ1 , a result similar to that obtained by Wang et al, 31 while the PCL-g-AA spectrum [ Fig. 2(B)] shows an extra peak at 1710 cm Ϫ1 , caused by the grafting of AA onto PCL.…”

Section: Infrared Spectroscopysupporting

confidence: 79%

In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

2004

J of Applied Polymer Sci

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ABSTRACT:In this study, tetra isopropyl ortho titanate (TTIP) and polycaprolactone (PCL) were chosen as the ceramic precursor and the continuous phase, respectively, for the preparation of novel nanocomposites by using an in situ sol-gel process. In addition, acrylic acid grafted polycaprolactone (PCL-g-AA) was investigated as an alternative to PCL. The hybrids (PCL/TiO 2 and PCL-g-AA/TiO 2 ) were characterized via Fourier transform infrared (FTIR) spectroscopy, dynamic mechanical thermal analysis (DMA), X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and Instron mechanical testing. It was found that the carboxylic acid groups of acrylic acid acted as coordination sites for the titania phase to form chemical bonds, thus improving the properties of the acrylic acid grafted composite compared with its acrylicacid-free counterpart. The TiO 2 content also determined the strength of interfacial bonding between the polymer chains and the ceramic phase, as shown by changes in glass transition temperature (T g ) with TiO 2 content. The maximum values of tensile strength and T g were obtained with the PCL-g-AA/TiO 2 composite at 10 wt % TiO 2 . At TiO 2 contents above this, excess particles led to segregation between the organic and inorganic phases.

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Section: Infrared Spectroscopysupporting

confidence: 79%

In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

2004

J of Applied Polymer Sci

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“…3(A)] shows how the -C¼O stretching vibration appeared as a strong broad band at 1725-1736 cm À1 . Wang et al [19] had obtained a similar result. The PCL/ starch spectrum [shown in Fig.…”

Section: Characterization Of Pcl-g-mah/starchmentioning

confidence: 58%

“…1(A) and (B) shows the FTIR spectra of unmodified PCL and PCL-g-MAH, respectively. The characteristic peaks of PCL [16,19] at 3300- 3700, 1737, 1725, 850-1480 and 720 cm À1 all appeared in both polymers, while extra peaks at 1786 and 1860 cm À1 were observed in PCL-g-MAH. Yu et al [20] indicated that peaks of FTIR spectra at 1781 and 1857 cm À1 represent anhydride functional groups of maleic anhydride, as have others [18,21,22].…”

Section: Characterization Of Pcl-g-mah/starchmentioning

confidence: 92%

Physical properties and biodegradability of maleated-polycaprolactone/starch composite

2003

Polymer Degradation and Stability

216

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“…) is the enthalpy of fusion of fully crystalline PCL, taken as 135.44 J g -1 [53][54][55][56]. The T m as measured from DSC analysis is (64.6 ± 0.2) °C, whilst the X c is (51.7 ± 0.5) %.…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 99%

High-pressure rheological analysis of CO2-induced melting point depression and viscosity reduction of poly(ε-caprolactone)

Curia

Focatiis

Howdle

2015

Polymer

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(2015) High-pressure rheological analysis of CO2-induced melting point depression and viscosity reduction of poly(ε-caprolactone). Polymer, Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/45413/1/curia_polymer2015_preprint.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the Creative Commons Attribution Non-commercial No Derivatives licence and may be reused according to the conditions of the licence. For more details see: http://creativecommons.org/licenses/by-nc-nd/2.5/ A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. Furthermore, a significant decrease in the viscosity of two PCL grades with different molecular weight (M n~1 0 kDa and 80 kDa) was also detected upon increasing the CO 2 pressure to 300 bar.Experimental viscosity data were fitted to the Carreau model to quantify the extent of the plasticising effects on the zero-shear viscosity and relaxation time under different conditions. Similar analyses were conducted under high-pressure nitrogen, to compare the effects obtained in the presence of a non-plasticising gas.

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Miscibility and morphology in crystalline/amorphous blends of poly(caprolactone)/poly(4-vinylphenol) as studied by DSC, FTIR, and 13 C solid state NMR

Cited by 139 publications

References 26 publications

In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

Physical properties and biodegradability of maleated-polycaprolactone/starch composite

High-pressure rheological analysis of CO2-induced melting point depression and viscosity reduction of poly(ε-caprolactone)

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